The demonstration that sound is transmitted by liquids using
this apparatus was developed by the French maker of acoustical apparatus,
Albert Marloye (1785-1874), whose business was bought by Koenig in 1858.

The tuning fork is lifted from its socket, which is then
filled with water. The fork is set into vibration, and its stem lowered
into the water. The up-and-down motion of the stem is conveyed through
the water to the top of the resonant box, which begins to ring. The tuning
fork is then removed, and the sound coming from the box dies away.

This Marloye apparatus is in the demonstration collection
of Glasgow University.

This device to show the transmission of sound
through water clearly shows the Koenig logo on the right-hand side of the
resonator box.

It is in the collection of the National Museum of American
History of the Smithsonian Institution.